CHEMICAL REACTION ENGINEERING QUIZ

If 'n' is the order of reaction, then unit of rate constant is

(time)-1 (concentration)n - 1

1/(time)(concentration)n - 1

(time)n - 1 (concentration)

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Variables affecting the rate of homogeneous reactions are

Temperature and composition only

Pressure and composition only

Pressure and temperature only

Pressure, temperature and composition

TRUE ANSWER : ?
YOUR ANSWER : ?

A chemical reaction is of zero order, when the reaction rate is (where, CA = concentration of reactant)

∝ 1/CA

∝ CA

Independent of temperature

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

In a continuous flow stirred tank reactor, the composition of the exit stream

Is same as that in the reactor

Depends upon the flow rate of inlet stream

None of these

Is different than that in the reactor

TRUE ANSWER : ?
YOUR ANSWER : ?

The half life period of a first order reaction is given by (where, K = rate constant. )

6.93 K

1.5 K

0.693/K

2.5 K

TRUE ANSWER : ?
YOUR ANSWER : ?

Photo-chemical reactions occur in presence of

Monochromatic radiation only

Sunlight

Darkness

Solid catalysts

TRUE ANSWER : ?
YOUR ANSWER : ?

A space time of 3 hours for a flow reactor means that

It takes three hours to dump the entire volume of the reactor with feed

Three reactor volumes of feed can be processed every hour

The time required to process one reactor volume of feed (measured at specified conditions) is 3 hours

Conversion is cent per cent after three hours

TRUE ANSWER : ?
YOUR ANSWER : ?

According to Arhenious equation of temperature dependency of rate constant for an elementary reaction

K ∝ e-E/RT

K ∝ T e-E/RT

K ∝ √T

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The fractional volume change of the system for the isothermal gas phase reaction, A 3B , between no conversion and complete conversion is

1

3

2

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Participation of __________ is involved in the occurrence of a chemical reaction.

Protons

Neutrons

Electrons

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?